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  本文關(guān)鍵詞：天津海濱環(huán)境高速公路耐久性混凝土施工研究　出處：《天津大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 耐久性 混凝土配合比 骨料級配 社會效益 高速公路

【摘要】：經(jīng)過多年的發(fā)展建設(shè)，天津市已建成一大批采用混凝土結(jié)構(gòu)橋梁等公共基礎(chǔ)設(shè)施。在這種背景下，如何確保環(huán)天津所處渤海灣北部地區(qū)鹽場環(huán)境下混凝土橋梁的耐久性并延長其使用壽命，同時為新建橋梁等混凝土工程提供耐久性實(shí)踐經(jīng)驗(yàn)，影響到基礎(chǔ)設(shè)施工程結(jié)構(gòu)安全和為社會提供功能時段的重大技術(shù)問題，而且也關(guān)系到天津輻射渤海灣區(qū)域經(jīng)濟(jì)能否健康發(fā)展的重大社會問題。 開展對鋼筋混凝土結(jié)構(gòu)耐久性研究，就是對高性能混凝土的研究，耐久性能是高性能混凝土的重要特點(diǎn)。本文結(jié)合國內(nèi)外耐久性混凝土的研究現(xiàn)狀以及應(yīng)用情況，以天津市國道112線高速公路工程為背景，重點(diǎn)研究并證明了耐久性混凝土推廣應(yīng)用的必要性。本文所做的主要工作如下： （1）對渤海灣地區(qū)的水質(zhì)進(jìn)行了調(diào)查研究，，病害主要是海水和土壤中氯鹽、鋼筋銹蝕和凍融破壞造成混凝土性能劣化，縮短壽命周期。為該地區(qū)耐久性混凝土配合比的設(shè)計提供了可靠數(shù)據(jù)；以既有渤海灣地區(qū)橋梁的損傷情況為例，分析說明了應(yīng)用耐久性混凝土的重要性； （2）在國道112線高速公路的工程中，為使得混凝土配合比的設(shè)計更加科學(xué)、合理，結(jié)構(gòu)壽命更耐久，打破常規(guī)的基于鮑羅米公式的強(qiáng)度設(shè)計混凝土配比，歸納“分層法”設(shè)計耐久性混凝土配合比，在混凝土的骨料級配方面，根據(jù)富勒級配原理，使用根據(jù)經(jīng)驗(yàn)提出的最大密實(shí)度線設(shè)計混凝土骨料級配的方式； （3）結(jié)合目前國內(nèi)外混凝土的實(shí)際應(yīng)用情況發(fā)現(xiàn)，耐久性混凝土在未來有著更為廣闊的發(fā)展空間，根據(jù)國道112線高速公路耐久性混凝土的相關(guān)統(tǒng)計數(shù)據(jù)，數(shù)據(jù)分析結(jié)果表明：耐久性混凝土的使用減少了國土資源的消耗，降低了水泥用量，減少了二氧化碳等有害氣體的排放量，創(chuàng)造了較高的社會效益、環(huán)境效益和經(jīng)濟(jì)效益，耐久性混凝土理應(yīng)得到全面的推廣應(yīng)用。
[Abstract]:After many years of development and construction , Tianjin has built a large number of public infrastructure such as concrete structure bridges . In this background , how to ensure the durability of the concrete bridge in the salt field environment in the north of the Bohai Bay in Tianjin , and prolong its service life , meanwhile , provide durability practical experience for concrete projects such as new bridges , affect the safety of the infrastructure engineering structure and the important technical problems for providing the functional period for the society , and also relate to the important social problems of the healthy development of the regional economy of the Bohai Gulf region . The research on durability of reinforced concrete structure is the research of high - performance concrete . The durability can be an important characteristic of high - performance concrete . In this paper , based on the research status and application of durable concrete at home and abroad , this paper studies and proves the necessity of the application of durable concrete . The main work is as follows : ( 1 ) The water quality in Bohai Bay area is investigated . The disease is mainly the degradation of concrete performance caused by chloride , corrosion and freeze - thaw damage in seawater and soil . It provides reliable data for the design of durability concrete mix proportion in the region . ( 2 ) In the project of Highway 112 Highway , to make the design of concrete mix proportion more scientific and reasonable , the structure life is more durable , break the conventional Brom formula based strength design concrete mix proportion , sum up " layered method " design durability concrete mix proportion , in the concrete aggregate gradation aspect , according to Fuller grading principle , use the maximum density line designed according to experience to design concrete aggregate gradation mode ; ( 3 ) According to the actual application of concrete at home and abroad , the durability concrete has a wider development space in the future . According to the statistics of durability concrete of Highway 112 expressway , the data analysis results show that the use of durability concrete reduces the consumption of soil resources , reduces the amount of cement , reduces the discharge of harmful gas such as carbon dioxide , creates higher social benefit , environmental benefit and economic benefit , and the durability concrete deserves comprehensive popularization and application .

【學(xué)位授予單位】：天津大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U445.57

【參考文獻(xiàn)】

相關(guān)期刊論文 前8條

1 金偉良;;混凝土結(jié)構(gòu)耐久性國際學(xué)術(shù)會議述評[J];國際學(xué)術(shù)動態(tài);2010年01期

2 梁詠寧;袁迎曙;;硫酸鈉和硫酸鎂溶液中混凝土腐蝕破壞的機(jī)理[J];硅酸鹽學(xué)報;2007年04期

3 貢金鑫,趙國藩;鋼筋混凝土結(jié)構(gòu)耐久性研究的進(jìn)展[J];工業(yè)建筑;2000年05期

4 盧木;混凝土耐久性研究現(xiàn)狀和研究方向[J];工業(yè)建筑;1997年05期

5 陳肇元,徐有鄰 ,錢稼茹;土建結(jié)構(gòu)工程的安全性與耐久性[J];建筑技術(shù);2002年04期

6 劉西拉;重大土木與水利工程安全性及耐久性的基礎(chǔ)研究[J];土木工程學(xué)報;2001年06期

7 羅昕;衛(wèi)軍;;Stress-Strain Relationship and Failure Criterion for Concrete after Freezing and Thawing Cycles[J];Journal of Southwest Jiaotong University;2006年03期

8 周錫武;衛(wèi)軍;羅昕;;Determination and Application of the Sharp Degradation Point of Concrete under Environmental Actions[J];Journal of China University of Geosciences;2006年02期

本文編號：1418262